diff --git a/src/browser/ui/__tests__/ReactDOMComponent-test.js b/src/browser/ui/__tests__/ReactDOMComponent-test.js
index bbe843a48b..b436ee4a93 100644
--- a/src/browser/ui/__tests__/ReactDOMComponent-test.js
+++ b/src/browser/ui/__tests__/ReactDOMComponent-test.js
@@ -663,28 +663,28 @@ describe('ReactDOMComponent', function() {
     });
 
     it('warns on invalid nesting', () => {
-      spyOn(console, 'warn');
+      spyOn(console, 'error');
       ReactTestUtils.renderIntoDocument(<div><tr /></div>);
 
-      expect(console.warn.calls.length).toBe(1);
-      expect(console.warn.calls[0].args[0]).toBe(
+      expect(console.error.calls.length).toBe(1);
+      expect(console.error.calls[0].args[0]).toBe(
         'Warning: validateDOMNesting(...): <div> cannot contain a <tr> node.'
       );
     });
 
     it('warns on invalid nesting at root', () => {
-      spyOn(console, 'warn');
+      spyOn(console, 'error');
       var p = document.createElement('p');
       React.render(<tr />, p);
 
-      expect(console.warn.calls.length).toBe(1);
-      expect(console.warn.calls[0].args[0]).toBe(
+      expect(console.error.calls.length).toBe(1);
+      expect(console.error.calls[0].args[0]).toBe(
         'Warning: validateDOMNesting(...): <p> cannot contain a <tr> node.'
       );
     });
 
     it('warns nicely for table rows', () => {
-      spyOn(console, 'warn');
+      spyOn(console, 'error');
       var Foo = React.createClass({
         render: function() {
           return <table><tr /></table>;
@@ -692,8 +692,8 @@ describe('ReactDOMComponent', function() {
       });
       ReactTestUtils.renderIntoDocument(<Foo />);
 
-      expect(console.warn.calls.length).toBe(1);
-      expect(console.warn.calls[0].args[0]).toBe(
+      expect(console.error.calls.length).toBe(1);
+      expect(console.error.calls[0].args[0]).toBe(
         'Warning: validateDOMNesting(...): <table> cannot contain a <tr> ' +
         'node. Add a <tbody> to your code to match the DOM tree generated by ' +
         'the browser. Check the render method of `Foo`.'
diff --git a/src/classic/class/__tests__/ReactClass-test.js b/src/classic/class/__tests__/ReactClass-test.js
index af525acedc..8986eb1ad4 100644
--- a/src/classic/class/__tests__/ReactClass-test.js
+++ b/src/classic/class/__tests__/ReactClass-test.js
@@ -390,8 +390,8 @@ describe('ReactClass-spec', function() {
 
     instance.getDOMNode();
 
-    expect(console.warn.calls.length).toBe(1);
-    expect(console.warn.calls[0].args[0]).toContain(
+    expect(console.error.calls.length).toBe(1);
+    expect(console.error.calls[0].args[0]).toContain(
       'MyComponent.getDOMNode(...) is deprecated. Please use ' +
       'React.findDOMNode(instance) instead.'
     );
diff --git a/src/core/__tests__/ReactComponent-test.js b/src/core/__tests__/ReactComponent-test.js
index 05893fc304..675672acb5 100644
--- a/src/core/__tests__/ReactComponent-test.js
+++ b/src/core/__tests__/ReactComponent-test.js
@@ -266,15 +266,15 @@ describe('ReactComponent', function() {
   });
 
   it('warns when calling getDOMNode', function() {
-    spyOn(console, 'warn');
+    spyOn(console, 'error');
 
     var container = document.createElement('div');
     var instance = React.render(<div />, container);
 
     instance.getDOMNode();
 
-    expect(console.warn.calls.length).toBe(1);
-    expect(console.warn.calls[0].args[0]).toContain(
+    expect(console.error.calls.length).toBe(1);
+    expect(console.error.calls[0].args[0]).toContain(
       'DIV.getDOMNode(...) is deprecated. Please use ' +
       'React.findDOMNode(instance) instead.'
     );